Jack-plane.



G. F. DYER & E. B. SCHWENK.

JACK PLANE.

APPLICATION FILED APR. 26. I917.

Patented J 11110 18, 1918.

awvewtow George E Dyer Ear Sc/zwezz/F reac es.

TED srarils PATENT orrron.

cnonen r. DYEB AND EARL a. soHwENx, or SEATTLE, wnsnnvo'ron.

JACK-ILANE.

Specification of Letters Patent. Patented June 18. 1918.

Application filed April 26, 1917: Serial No. 164,801.

To all whom it may concern:

King and'State ofWashington, have in-' vented a certain new and useful Improvement in J ack-Pl anes, of which the following is a specification.

Our invention relates to jack planes, and the object of our invention is to provide a jack plane which shall embody an electric motor, vertioall adjustable bearings within which is rotata ly mounted a cylinder carrying cutting blades, and means for communicatin rotary motion from said motor to said cy inder, whereby said jack plane shall be operatively adapted smoothly to plane a surface of wood in response to its movements thereon, which movements may be manually effected by the expenditure 0 little effort of the operator.

We accomplish this object by devices illusaccompanying drawings nal portion cut away better to disclose some 7 operative parts;

Fig. 3 is a view of the same in vertical cross-section on broken line 3, 3 of Fig. 2;

Fig. 4 is a fragmentar view of the same in horizontal section on roken line 1-, 4 of Fig. 3, and

ig. 5 is a fragmentary view of the same in vertical-sectionv on broken line 5, 5 of Fig. 3.

Referring to the drawings, throughout which like reference numerals indicate like parts, (i designates the oblong base plate of metal which is provided with integral flanges 7 and 8 which extend upwardly alon' the respective opposite side edges of sai base plate 6 in planes at right angles to the plane of the bottom surface of said base plate 6. v

Secured to the top surface of: said base late 6 are handles 9 and 10 of well known orm, the handle 9 being disposed on the front portion and the handle 10 bein disposed on the rearward portion of said base plate 6.

Forward of the handle 10, the upper portion of each of the flanges 7 and 8 at opposite points thereof, are formed to have an outwardly projecting ofi-setportion (as offsets 11 and 12 indicated by dotted lines in Fi 1 and by full lines inl igs. 2, 3, and 4), an extending downwardly insaid flanges 7 and 8 from said oil' sets 11 and 12 to a plane adjacent to the top surface of the base plate 6 are slotted openings 13 and 1 1 each of the form shown in cross-section in Fig. 4.

Extending transversely between the flanges 7 and 8through the base plate 6, in a position registering with the bottom ends of the slotted openings 13 and 14;, is an opening 15, as more clearly shown in Figs. 3 and 5.

Securely fastened to the top edge surfaces of the offsets 11 and 12, by means of screws 16, is a transversely disposed plate 17 within whose opposite end portions adjacent to the inner sides of said oil-sets 11 and 12 are rotatably mounted, adjusting screws 18 and 19, respectively, which are prevented from vertical movements by collars 20 and 21, respectively, which are. maintained in their verticalpositions by pins 22 and 23, respectively.

The adjusting screw 18 and 19 are provided with screw-unread extending d0wn- \vardly from the collars 20 and 21, respectively, to their lower ends; and such screW- threaded portions of said adjusting screws 18 and 19 project each into a screw-threaded hole formed in a vertically movable journal bearing block, as shaft bearing blocks 24 and 25, respectively, which are slidably disposed in the vertical slotted openings 13 and 14, respectively, whereby said journal bearing blocks 2% and 25 may each be vertically moved to and be supported in a desired position.

Each. of the journal bearing blocks 24 and 25 is provided with a journal bearing in its. lower end portion within which bearing block is rotatably disposed a different be projected through the opening lfi to a desired point beyond the nlane of the hottom surface of the base plate 6 in response t" a manipulation of the adjusting screws 18 and 19. I

An end portion of the journal. 27 of the cylinder 28 projects outwardly through the journal bearing block and on such ont- Wardly projecting end portion is fastened a gea-rwheel '34 which operatively engages with an idler gearwheel that is rotatably mounted on a screw stud 36 in the outer side of the flange 8.

Mounted on the top surface of the base plate 6 forward of the oil-sets 11 and 1% is an electric 1notor'37, one end portion of whose shaft 38 projects through and out Wardly from the flange 8, and on such ont- 1 Wardly projecting end portion of said' shaft 38 is fastened a gearwheel 89 disposed operatively to engage with the idler gearwheel c 35; time upon a rotation'of the motor shaft 5 38, the vgearwheel 34k and cylinder 28 will revolve in'tlie' directions indicated. by ar rows, as more clearly shown in Fig. 3.

The gearwheels 3a, 36 and 35) are ClIIClOSBd V by a housing 40 secured to the outer side of the flange 8, thereby to prevent chips and dirt from finding access to the teeth of gearwheels. I v

In the operation of our jack plane the said conducting cords ll of the =motor 37 are extended to connect with a switch con- I trolled electric circuit, not shown, and therenal bearing blocks 2 and 25 to such apesition as will cause thecutting' edges of the revolving cutters 29 and 301m pro ect.loWer forms,

emmas atively to plane the surface of an object in engagement with said base: plate 6-.

Obviously, changes may be made in the dimensions andv arrangement of parts of our invention Without departing from the spirit thereof.

) What We claim is:

A plane of the class described comprising' a base plate provided with parallel flanges extending upwardly from its opposite side edges, each'fiange provided intermediate its ends with a lateral offset portion provided with-a'vertical slot registering at the lower ends Withthe transverse slot iiormed in the base, a transverse plate 4 reinovabl secured to the top edges of the lateral o set port-ions of said flanges and covering the upper ends of said slots, a journal hearing block slidably fittedin each vertical slot," adjusting screws fitted through said plate and engaging the said blocks whereby said hlockslnay be adjusted to .dif-

ferent positions with relation to the base, a transverse cylindcrlocated between and journaledto each block, a plurality elf-cute ting hladesssemovably secured to cylinder] an electric motor secured upon said base and having one end of itsshaft ex-., tending through one of said side flanges,

gear Wheels associated with one end. of the cylinder andwith the extended end of the shaft whereby when the motor is energized saidcylinder shall be rotated, and a housi'ng secured to the exterior of one side flange and completely covering said gears. v

.ln witness whereof, W8 hereunto sub scribe our names this-20th day of April A. ll, 1917.

r DYER.

EARLyB. S'GHWENK. 

